Disclaimer:

The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

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Common name: Rio Grande Chub

Taxonomy: available through www.itis.gov

Identification: Woodling (1985); Sublette et al. (1990); Page and Burr (1991).

Size: 18 cm.

Native Range: Upper Rio Grande and Pecos River systems, Colorado and New Mexico; isolated population in Davis Mountains (Pecos River system), Texas (Page and Burr 1991).

Alaska	Hawaii	Puerto Rico & Virgin Islands	Guam Saipan

Native range data for this species provided in part by NatureServe

Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Means of Introduction: Unknown.

Status: Reported from New Mexico from an area thought to be outside its native range.

Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.

Remarks: Sublette et al. (1990) stated that the Gila pandora is "possibly native to the Canadian drainage although it may be introduced there." They also noted that the species hybridizes with longnose dace Rhinichthys cataractae.

Other Resources:

Author: Fuller, P.

Peer Review Date: 6/26/2000

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.